Concealed hinge



G. .GOTZINGER CONCEALED HINGE March 16, 1937 Filed Dec; 13, 1954 I INVENTOR. 650a, 6072 lNEE ATTORNEY.

Patented Mar. 16, 1937' [barren stares parser orrics CONCEALED HINGE Georg Gotsinger, Detroit, Mich.

Application December 13, 1934, Serial No. 757,275

8 Claims.

The present invention pertains to a novel hinge designed particularly, although not necessarily, for automobile doors, and the principal object is to avoid the awkward appearance of the ordinary external or protruding hinge and the ac-,

tain of the hinge points to slide during the opening and closing of the door and by a special location of certain of the pivot points joining intersecting links in the hinge structure.

Another object of the invention is to provide a hinge that is unusually compact when closed, and with this object in view, the relatively movable parts of the hinge are so constructed and arranged that they come into surface contact with one another when the hinge is closed. Thus, rattling is less likely to develop in the hinge, and the accumulation of dirt therein is considerably diminished. Still another object is to provide a hinge that is self-stopping, thereby doing away with the separate stop mechanism usually provided at the top of the door.

1 The invention is fully disclosed by way of eX- ample in the followingdescription and in the accompanying drawing in which Figure 1 is an elevation of the position;

Figure 2 is a section on line 2-2 of Figure 1; Figure 3 is a plan view of the closed hinge; and Figures 4 and 5 are detail elevations of certain hinge parts.

Reference to these views will now be made by use of like characters which are employed to designate corresponding parts throughout.

As shown more clearly in Figure 2, the hinge embodies a pair of main plates or leaves land 2 adapted for connection respectively to a pillar or post and to the hinged edge of the door. These members may be embodied, if desired, in the usual metal hinge pocket provided at the point of attachment, or may be welded or otherwise secured to such pocket. For the purpose of illustration, the leaves I and 2 are herein shown as attached to suitable metal plates 3 which, in turn, are

hinge in open carried by the pillar and door respectively and overlap at 3 at the outer side of the hinge. Each of the leaves I and 2 preferably extends the entire height of the hinge.

Intermediate leaves i and 5 are pivotally attached respectively to the inner ends of the leaves I and 2. For this purpose each leaf l and 2 has at its outer end a pair of spaced and aligned knuckles 6 receiving a knuckle l! on each leaf 4 and 5, the assembly being completed by a pivot pin 8 passed through and suitably retained in the aligned knuckles. The inner ends of the leaves t and 5 are pivotally attached to one another also by means of aligned knuckles 9 and a hinge pin it.

Each of the leaves I and 2 is slotted lengthwise and depthwise, as indicated by the numeral H. A pair of links I 2 is pivotally attached to the top and bottom of the intermediate leaf l by a pivot pin it passed through a boss is in the leaf. Corresponding ends of these links lie at the top and bottom of slot ll of leaf 5 and are fastened together by a pin it which is slidably received in the slot. The point of intersection of links it with leaf s at pin i3 is so located that approximately two-thirds the length of link I2 lies between the centers of pins l3 and i5 and one-third the length of leaf i lies between the center of pins 8 and I3.

In like manner a pair of links it is attached to the top and bottom of leaf 5 by a pivot pin ll passed through a boss IS in the leaf, the outer ends of the links being held together by a pin l9 slidable in the slot ll of the leaf 2. As in the case of linkl2 and leaf i, the pivot pin H is spaced from the corresponding pin 8 a distance approximately equal to one-third the length of the leaf 5 and is spaced from the pin a distance equal approximately to two-thirds the length of the link l6. 7

' The remaining ends of the links II and it are notched at H! and I6 and overlap each other between the intermediate leaves 4 and 5 and are pivotally attached together by means of a spacing sleeve 22.

It will be seen inFigures 1 and 2 that the inner surfaces 23 of the main leaves I and 2 are flat except where relieved at 26 to accommodate the intermediate knuckles l4, l8 when the hinge is closed. The intermediate leaves 4 and 5, being also flat, come into surface contact with the innor sides 23 of the members "I and 3 when the knuckles M, It are received in the recesses 2 on closing the hinge. Similarly the leaves t and 5 come into surface engagement with each other,

the combined thickness of these members being such as to provide a space receiving the inner knuckle 9 between the leaves I and 2 as shown in Figure 3. Thus, the four leaves, I, 2, 4 and 5 of the hinge fold into a compact and solid unit in such a manner as to prevent rattling of the parts and the accumulation of dirt therein.

Due to the intersection of the links ll and IS with the leaves 4 and 5 respectively at the points located as described, the hinge is capable of opening to an angle of approximately with a comparatively small separation of the pins 8. The distance between these pins in the open position of the hinge is about twice their distance when the hinge is closed. Consequently the lateral displacement is hardly noticeable before the swinging edge of the door clears the adjacent pillar. Finally, the opening movement of the hinge is limited by the stopping of the pins l5, l1 against the outer end of the slots H as shown in Figure 2, so that the auxiliary stops are not necessary.

Although a specific embodiment of the invention has been illustrated and described, it will be understood that various alterations in the details of construction may be made without departing from the scope of the invention, as indicated by the appended claims.

What I claim is:

1. In a hinge, a pair of main leaves adapted for attachment respectively to a door frame and the adjacent edge of a door, a pair of intermediate leaves pivoted respectively to said main leaves and to each other, and a pair of links intersecting and pivoted to said intermediate leaves respectively, said links being pivoted to each other at one end between said intermediate leaves and having their remaining ends slidably received respectively in said main leaves.

2. In a hinge, a pair of main leaves adapted for attachment respectively to a door frame and the adjacent edge of a door, a pair of intermediate leaves pivoted respectively to said main leaves and to each other, and a pair of links intersecting and pivoted to said intermediate leaves respectively, said links being pivoted to each other at one end between said intermediate leaves and having their remaining ends slidably received respectively in said main leaves, the distance from each of said points of intersection to the sliding end of the corresponding link being more than half the length of said link, and to the pivotal connection between said intermediate leaves being more than half the length of said leaves.

3. In a hinge, a pair of main leaves adapted for attachment respectively to a door frame and the adjacent edge of a door, a pair of intermediate leaves pivoted respectively to said main leaves and to each other, and a pair of links intersecting and pivoted to said intermediate leaves respectively, said links being pivoted to each other at one end between said intermediate leaves and having their remaining ends slidably received respectively in said main leaves, the distance from each of said points of intersection to the sliding end of the corresponding link being approximately two-thirds the length of said link, and to the pivotal connection between said intermediate leaves being approximately two-thirds the length of said leaves.

4. In a hinge, a pair of main leaves adapted for attachment respectively to a door frame and the adjacent edge of a door, a pair of intermediate leaves pivoted respectively to said main leaves and to each other, and a pair of links intersecting and pivoted to said intermediate leaves respectively, said links being pivoted to each other at one end between said intermediate leaves and having their remaining ends slidably received respectively in said main leaves, said intermediate leaves having fiat inner surfaces adapted to engage each other when the hinge is closed and having flat outer surfaces adapted to engage fiat inner surfaces on the main leaves, the last named surfaces being relieved to receive the pivotal intersections between the links and the intermediate leaves, and the combined thickness of said intermediate leaves being such as to provide a space for receiving the pivotal connection between said leaves.

5. In a hinge, a pair of main leaves adapted for attachment respectively to a door frame and the adjacent edge of a door, a pair of intermediate leaves pivoted respectively to said main leaves and to each other, and a pair of links intersecting and pivoted to said intermediate leaves respectively, said links being pivoted to each other at one end between said intermediate leaves and having their remaining ends slidably received respectively in said main leaves, the distance from each of said points of intersection to the sliding end of the corresponding links being approximately two-thirds the length of said link, and to the pivotal connection between said intermediate leaves being approximately two-thirds the length of said leaves, said intermediate links having flat inner surfaces adapted to engage each other and having fiat outer surfaces adapted to engage flat inner surfaces on said main leaves when the hinge is closed, the last named surfaces being relieved to receive the pivotal intersections between the links and the intermediate leaves, and the combined thickness of said intermediate leaves being such as to provide for receiving the pivotal connection between said links.

6. A hinge comprising a pair of hinge plates, a pair of connecting links pivoted to each other and to each hinge plate, and a pair of guide links pivoted to each other and slidably connected to said plates, each guide link being also pivoted to an associated connecting link at intermediate points in said links.

'7. A hinge comprising a pair of hinge plates, a pair of connecting links pivoted to each other and to each hinge plate, and a pair of guide links pivoted to each other and slidably connected to said plates, said hinge plates having slotted flanges, said guide links having cross-pins extending into the slots in said flanges and slidable therein, and each guide link being also pivotally connected to an associated connecting link at intermediate points in said links,

8. A hinge comprising a pair of hinge plates, a pair of connecting links pivoted to each other and to each hinge plate, and a pair of guide links pivoted to each other and slidably connected to said plates, each hinge plate having a slotted flange along one edge thereof, and each guide link having a portion extending into and slidable along the slotted flange of an associated hinge plate.

GEORG GOTZINGER. 

